Gyratory structure.



G. W. COMBS. GYRATORY STRUCTURE. APPLICATION FILED IULY 8.1910.

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Patented July 25, 1916.

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aw. COMBS. GYRATOHY STRUCTURE. APPLICATION FILED lULY 8,1910.

Patented July 25, 1916.

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GEORGE W. COMES, OF LEAVENWORTH, KANSAS.

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Specification of Letters Patent.

Patented July 25, 1916.

Application filed July 8, 1910. Serial No. 570,935.

To all whom it may concern:

Be it known that I, GEORGE W. Cones, a citizen of the United States, residing at Leavenworth, in the county of Leavenworth and State of Kansas, have invented certain new and useful Improvements in Gyratory Structures, of which the following is a specification.

My invention relates to improvements in gyratory structures, such for instance as bolters, screeners, sorting-machines, sifters, etc, and my present object is to provide novel means for restraining the structure from abnormal throw, so that it may properly perform its function without subjecting the building containing the same to undue strain or vibration.

In the accompanying drawings: Figure 1 shows a side elevation partly in section of a gyratory structure provided with my improvements. Fig. 2 is a broken vertical section on line II of Fig. 1. Fig. 3 is a hori- Zontal section on line III-III of Fig. 1. Fig. 1 is a vertical section of a modified form of the invention. Fig. 5 is a horizontal section on line VV of Fig. 4. Fig. 6 is a longitudinal section on line VI-VI of Fi 5.

l designates the gyratory structure, which consists of a pair of sieve-boxes 2 united by bridge-trees 3 having centrally-disposed bearings 4. Structure 1 is freely supported from the ceiling 5 of the building by aplurality of rods 6 which prevent said structure from rotating with a centrally-disposed vertically-positioned shaft 7 having eccentricweights 8 fixed thereto, to impart a gyratory motion to the structure. Shaft 7 is journaled in bearings t and supported by an eccentric-pin 9 carried by a step-bearing 10 over the surface of which it is free to move in any direction, an antifriction ball 11 being interposed between the end of the eccentric-pin and the step-bearing. Shaft 7 is provided at its upper end with a crank-p0rtion 9 in line with the eccentric-pin 9. Ball 11 is held in position beneath the lower end of the eccentric-pin by a sleeve 12 fixed to said lower end.

Step-bearing 10 is provided with an upwardly-extending wall 13 forming a lubricant-chamber 1d normally closed by a cover 15 through which the eccentric-pin extends. Cover 15 is slidably mounted upon the upper edge of the wall 13 so that it may move laterally with the eccentric-pin.

16 designates a stationary driver surrounding the aXis of rotation of shaft 7, which is driven by said driver through the intermediacy of a yielding transmission devlce, comprising a rod 17 and universal couplings 18 and 19, the former of which connects the rod to the crank-portion 9 of shaft 7 while the latter connects said .rod to a shaft 20 upon which pulley 16 is fixedlymounted. This arrangement permits shaft 7 to gyrate while the driver 16 remains stationary so far as lateral or orbital movement is concerned. Shaft 20 is journaled in stationary bearings 21 carried by a hanger 22 depending from ceiling 5. Driver 16 may "be arranged overhead, as shown in Fig. 1, or placed below the structure, as shown in Fig. 4.

23 designates a pulley which may be either loosely or fixedly mounted upon the eccentriopin 9. Said pulley cooperates with restraining devices to prevent lunging or abnormal throw of the structure 1. Said restraining devices consist of endless flexible members or belts 24, running around pulley 28 and a pair of idlers 25', which latter are located on opposite sides of the pulley. Idlers 25 are carried by stands 26, adjustablymounted upon base-plates 27 provided with set-screws 28 and 29 for adjusting the stands laterally and longitudinally, respectively, for the purpose of adjusting and tensioning the belts 24;. After the stands have been properly adjusted, they are locked by bolts 30 extending through large holes 31 in the lower portions of the stands. l/Vhen desired the two short belts 24 may be omitted, and one long belt 24 (Fig. 3) may be substituted therefor, but I find in practice that two belts are more efficient in restraining the structure from abnormal throw than where but one belt is used.

In the modified form disclosed by Figs. 4: to 6, inclusive, the construction and operation is similar to that disclosed in the preferred form, the chief difference being that a four-box structure, driven by a crank- V shaft similar to that disclosed by Reissue Letters-Patent No. 12,894, is substituted for the two-box structure and shaft disclosed by Fig. 1.

Referring in detail to said modified form, 1 designates the gyratory structure consisting of sieve-boxes 2 connected in pairs by diagonally-arranged bridge-trees 3 having centrally-disposed bearings 4 Sieveboxes 2 are freely-supported for gyration from the ceiling 5* by rods 6 which also prevent the structure from rotating with a crank-shaft 7, journaled in bearings t 'from two of which it is supported by collars A. 16 designates a stationary driver surrounding the axis of rotation of shaft 7*, which it drives through a yielding power transmission device consisting of a rod 17 and universal couplings 18 and 19 which former connects rod 17 to the lower end of shaft 7 while the latter connects said rod to a shaft 20 journaledin stationary bearings 21 and upon which pulley 16 is fixedlymounted. Bearings 21 are carried by a hanger 22 depending from the floor C of the building. This arrangement permits shaft 7 tomoveorbitally or laterally in any direction, whiledriver 16 remains stationary so far as orbitalor lateral movement is concerned. 23 designates a pulley which may be either fixedly or loosely mounted upon the lower portion of shaft 7.

The structure is restrained from abnormal throw by a pair of oppositely-extending endless members or belts-24 running around pulley 23 and a pair of idlers 25 which latter are arranged atopposite sides of pulley 23 Idlers 25 are carried by stands 26 mounted upon base-plates 27 provided with set-screws 28 and 29 for adjusting the stands 26 laterally and longitudinally, respectively. After the stands have been properly adjusted, theyarelocked from accidental movement by bolts 3O extending through large openings sl m the lower portions of the stands 26. This adjustment of the stands together with the idlers 25*, permits belts 24 to be tensioned and adjusted as desired.

By having the belts extend in opposite directions, as shown, it is obvious that they tend to restrain the structure from abnormal throw or lunging by pulling in'oppositc directions upon the pulleys 23 and 23*, Figs. 1 and 4, respectively.

Having thus described my invention, what i I claim is 1. In combination, a freely-suspended structure, a shaft for actuating the same,,a step-bearing for said shaft, steadying means for said structure including oppositely-extending flexible members which restrain but do not drive the structure, a stationary driver, and yielding means connecting said driver and the shaft to drive the same.

2. In combination, a freely-suspended structure, a gyrator therefor, a support for said gyrator independent of the structure, flexible means engagmg said gyrator and tending to restrain the structure from abnornial throw, a stationary driver in axial alinement with the vgyrator support, and yielding means operablyconnecting saidv driver and the gyrator. I

3. In combination, a normallygyratable structure, a pulley thereto, endlessmeans engaging said pulleytto restrain the structure from abnormal throw, idlers engaged'by said endless means, and means for adjusting said idlers. a

a. In combination, a normally-gyratable structure, a pulley thereto, anindependent support near said pulley, means for adjust- Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents, Washington, 13.0. 

